Vehicle Battery & Alternator Diagnostics

What resting open-circuit voltage reading across a 12V automotive battery indicates a 100% State of Charge (SOC) at 70°F?

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 Correct Incorrect12.60 to 12.72 Volts (about 2.1V per cell) is typical for a fully charged flooded lead-acid battery at room temperature. A reading near 12.0V is significantly discharged, and 11.8V is deeply discharged.

What resting open-circuit voltage reading across a 12V automotive battery indicates a 100% State of Charge (SOC) at 70°F?

• 12.00 Volts
• 12.60 to 12.72 Volts
• 14.40 Volts
• 10.50 Volts